Dr. Brenda Fitzgerald, director of the Centers for Disease Control and Prevention, resigned Wednesday following reports that she bought shares in a tobacco company, among other financial dealings that presented a conflict of interest.

Discrimination in the form of sexual harassment has been in the headlines for weeks now, but new poll results being released by NPR show that other forms of discrimination against women are also pervasive in American society. The poll is a collaboration with the Robert Wood Johnson Foundation and the Harvard T.H. Chan School of Public Health.

For example, a majority (56 percent) of women believe that where they live, women are paid less than men for equal work. And roughly a third (31 percent) say they've been discriminated against when applying for jobs because they are women.

New results from an NPR survey show that large numbers of Asian-Americans experience and perceive discrimination in many areas of their daily lives. This happens despite their having average incomes that outpace other racial, ethnic and identity groups.

More than half of lesbian, gay, bisexual, transgender and queer Americans say they have experienced violence, threats or harassment because of their sexuality or gender identity, according to new poll results being released Tuesday by NPR, the Robert Wood Johnson Foundation and the Harvard T.H. Chan School of Public Health.

More than half of Native Americans living on tribal lands or other majority-Native areas say they have experienced racial or ethnic discrimination when interacting with police (55 percent) and applying for jobs (54 percent). That's according to new poll results being released Tuesday by NPR, the Robert Wood Johnson Foundation and the Harvard T.H. Chan School of Public Health.

About a third of Latinos in America say they've been personally discriminated against when it comes to applying for jobs, being paid equally or considered for promotions — and when trying to rent a room or apartment or buy a house. Slightly more (37 percent) say they've personally experienced racial or ethnic slurs because of their race or ethnicity.

A new poll out this week from NPR finds that 60 percent of black Americans say they or a family member have been stopped or treated unfairly by police because they are black. In addition, 45 percent say they or a family member have been treated unfairly by the courts because they are black. The poll is a collaboration between NPR, the Robert Wood Johnson Foundation and the Harvard T.H. Chan School of Public Health.

Majorities in many ethnic, identity and racial groups in America believe that discrimination exists against their own group, across many areas of people's daily lives, according to a poll from NPR, the Robert Wood Johnson Foundation and the Harvard T.H. Chan School of Public Health.

The poll asked a wide range of questions about where Americans experience discrimination — from the workplace to the doctor's office — and people's perception of it. The groups polled include whites, blacks, Latinos, Asian-Americans, Native Americans and LGBTQ adults.

For years, doctors have focused on detecting breast cancer at the earliest possible moment after a tumor develops so treatment can start right away. But more and more studies are showing many small, early tumors don't present a danger.

So, when is it safe to remove a tumor but skip additional treatments like tamoxifen, chemotherapy and radiation?

There's a major gap between what parents view as quality child care and what developmental psychologists and other specialists define as good care. That's according to a poll released this week by NPR, the Robert Wood Johnson Foundation and the Harvard T.H. Chan School of Public Health.

Employers' efforts to reduce stress get low grades in a new poll by NPR, the Robert Wood Johnson Foundation and Harvard's T.H. Chan School of Public Health.

In particular, among those working adults who say they've experienced a great deal of stress at work in the past 12 months, the vast majority, 85 percent, rate the efforts of their workplace to reduce stress as fair or poor.

A germ that can't be treated with an antibiotic that is often used as the last resort has shown up for the first time in the United States.

Government scientists say the case is cause for serious concern but doesn't pose any immediate public health threat.

The germ was discovered in a 49-year-old woman in Pennsylvania with a urinary tract infection. The infection was caused by E. coli bacteria that had a gene that made them resistant to an antibiotic known as colistin.

Science and health care journalism lost Peggy Girshman on Monday, one of the profession's fiercest advocates and gentlest souls. She was 61.

Girshman was a leader at many news and professional organizations, including NPR, NBC News, the National Association of Science Writers and Kaiser Health News, which she co-founded.

Over the years, she won four local Emmys and a national one, along with other major awards given out for the best work in our field. The awards were well-deserved and came as no surprise to those of us who knew her. She was one of the absolute best.

A series of polls in key states by NPR and its partners finds that more than half of adults in the U.S. believe the Affordable Care Act has either helped the people of their state or has had no effect. Those sentiments are common despite all the political wrangling that continues over the law.

About a third (35 percent) of adults say the law has directly helped the people of their state, while a quarter (27 percent) say it has directly hurt people.